Astudent does an experiment for a science fair to study whether temperature affects the timing of a cricket’s chirps. the student keeps a cricket in an enclosed box that is heated to different temperatures each day for twelve days. the student records the cricket’s chirps by using a sound-activated microphone so the timing of the chirps can be measured. which is the dependent variable in this experiment?
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Biology, 22.06.2019 01:00
Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?
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Biology, 22.06.2019 09:40
80 points pls brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?
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Biology, 22.06.2019 14:00
Vinegar has a ph of 3, and household ammonia has a ph of 11. is the concentration of h+ greatest in the vinegar or ammonia?
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Astudent does an experiment for a science fair to study whether temperature affects the timing of a...
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